A particle is moving in a circle with uniform speed v. In moving from a point to another

A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite point

Options

(a) The momentum changes by mv
(b) The momentum changes by 2mv
(c) The kinetic energy changes by 1/2 mv²
(d) The kinetic energy changes by mv²

Correct Answer:

The momentum changes by 2mv

Explanation:

The diametrically opposite points, the velocities have same magnitude but opposite directions. Therefore, change in momentum is MV – (- MV) = 2MV.

admin:

Related Questions

  1. What is the amount of energy released by deuterium and tritium fusion?
  2. The ratio of the numerical value of the average velocity and average speed
  3. A body of mass m is placed on the earth’s surface. It is taken from the earth’s surface
  4. Heat is supplied at constant pressure to diatomic gas. The part of this heat that goes
  5. If a spring of spring constant k stretched by a length x under tension T, the energy